Car and Driver Home Use Inflator 300 PSI Portable Air Compressor with Cigarette Lighter Adapter, Black Used to inflate your flat tire, pool toys, bicycle tires, etc. Built-in pressure gauge for precise air pressure adjustment 300 PSI capabilities enable this gadget to attain the necessary pressure in your tires or toys 12 Volt vehicle adapter allows you to bring this air compressor on the road Press-on tire valve adapter ensures this compressor will work on most air-filled items